Leaf spring



FIG. 1 is a perspective view of a leaf spring showing our new design, the claim is shown broken apart in FIGS. 1-3, 6, and 7 to represent indeterminate length.

FIG. 2 is a top view.

FIG. 3 is a bottom view.

FIG. 4 is a front end view.

FIG. 5 is a rear end view.

FIG. 6 is a left side view; and,

FIG. 7 is a right side view.

The broken line showing of the holes in FIGS. 1-3 is included for the purpose of illustrating portions of the leaf spring and forms no part of the claimed design. 

CLAIM The ornamental design for a leaf spring, substantially as shown and described. 